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Molecules 2013, 18(5), 5482-5497; doi:10.3390/molecules18055482

Synthesis, Antifungal and Antitumor Activity of Novel (Z)-5-Hetarylmethylidene-1,3-thiazol-4-ones and (Z)-5-Ethylidene-1,3-thiazol-4-ones

1
Heterocyclic Compounds Research Group, Department of Chemistry, Universidad del Valle, A.A. 25360, Cali, Colombia
2
Pharmacognosy, Faculty of Biochemical and Pharmaceutical Sciences, Universidad Nacional de Rosario, Suipacha 531, (2000), Rosario, Argentina
3
Department of Inorganic and Organic Chemistry, Universidad de Jaén, 23071, Jaén, Spain
*
Author to whom correspondence should be addressed.
Received: 8 April 2013 / Revised: 2 May 2013 / Accepted: 8 May 2013 / Published: 13 May 2013
(This article belongs to the Section Medicinal Chemistry)
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Abstract

New hetaryl- and alkylidenerhodanine derivatives 3ad, 3e, and 4ad were prepared from heterocyclic aldehydes 1ad or acetaldehyde 1e. The treatment of several rhodanine derivatives 3ad and 3e with piperidine or morpholine in THF under reflux, afforded (Z)-5-(hetarylmethylidene)-2-(piperidin-1-yl)thiazol-4(5H)-ones and 2-morpholinothiazol-4(5H)-ones 5ad, 6ad, and (Z)-5-ethylidene-2-morpholinothiazol-4(5H)-one (5e), respectively, in good yields. Structures of all compounds were determined by IR, 1D and 2D NMR and mass spectrometry. Several of these compounds were screened by the U.S. National Cancer Institute (NCI) to assess their antitumor activity against 60 different human tumor cell lines. Compound 3c showed high activity against HOP-92 (Non-Small Cell Lung Cancer), which was the most sensitive cell line, with GI50 = 0.62 μM and LC50 > 100 μM from the in vitro assays. In vitro antifungal activity of these compounds was also determined against 10 fungal strains. Compound 3e showed activity against all fungal strains tested, but showed high activity against Saccharomyces cerevisiae (MIC 3.9 μg/mL). View Full-Text
Keywords: antifungal activity; antitumor activity; hetarylmethylidenerhodanine derivatives; piperidine; morpholine antifungal activity; antitumor activity; hetarylmethylidenerhodanine derivatives; piperidine; morpholine
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MDPI and ACS Style

Insuasty, A.; Ramírez, J.; Raimondi, M.; Echeverry, C.; Quiroga, J.; Abonia, R.; Nogueras, M.; Cobo, J.; Rodríguez, M.V.; Zacchino, S.A.; Insuasty, B. Synthesis, Antifungal and Antitumor Activity of Novel (Z)-5-Hetarylmethylidene-1,3-thiazol-4-ones and (Z)-5-Ethylidene-1,3-thiazol-4-ones. Molecules 2013, 18, 5482-5497.

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